Release Notes for v0.54.0 (#3949)

* v0.54.0 release notes from template

* Add browser#1406 to v0.54.0 release notes

* Add release notes for experimental csv module

* Oleg's changelog

* External contributors' changelog

* Minor alignments of release notes

* Add browser#1420 & browser#1421 to release notes

* Joan's changelog

* Breaking changes, minor adjustments

* Extract gRPC updates under the feature

* Add setChecked to release notes

* Add file upload protocol to release notes

* Add browser#1408 & #1422 to release notes

* mstoykov: most of my release notes changes

* Add notes specific to --local-execution

* Improve browser release notes

Co-authored-by: Ankur <ankur.agarwal@grafana.com>

* Add branding changes

* add usage changes to release notes

* xk6-websockets changes

* Add browser module notice

* Add future plans notice back

* Fix regex code block release notes

* Fix doc next links to latest

* Add setChecked links

* Add async check utility

* Fix k6lib check next to latest

* Improve async check notes

Co-authored-by: Ankur <ankur.agarwal@grafana.com>

* Improve browser release notes

Co-authored-by: Heitor Tashiro Sergent <heitortsergent@gmail.com>

* Apply suggestions from code review

Co-authored-by: Heitor Tashiro Sergent <heitortsergent@gmail.com>

* Adding missing dependencies PRs, aligning the style

* Mention further bug fixes and maintenance work

* Apply suggestions from code review

Co-authored-by: Andrey Slotin <andrew.slotin@grafana.com>

* Add fix browser#1435

* Apply suggestions from code review

Co-authored-by: Mihail Stoykov <312246+mstoykov@users.noreply.github.com>
Co-authored-by: Heitor Tashiro Sergent <heitortsergent@gmail.com>

* Add most recent browser related fixes

* Apply suggestions from code review

Co-authored-by: Heitor Tashiro Sergent <heitortsergent@gmail.com>

* Apply code review suggestions, mentioning new PRs

* Apply suggestions from code review

Co-authored-by: Heitor Tashiro Sergent <heitortsergent@gmail.com>

* Apply suggestions from code review

Co-authored-by: Mihail Stoykov <312246+mstoykov@users.noreply.github.com>

* Apply suggestions from code review

* Apply suggestions from code review

Co-authored-by: Joan López de la Franca Beltran <5459617+joanlopez@users.noreply.github.com>

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Co-authored-by: ankur22 <ankur.agarwal@grafana.com>
Co-authored-by: oleiade <theo@crevon.me>
Co-authored-by: Joan López de la Franca Beltran <joanjan14@gmail.com>
Co-authored-by: İnanç Gümüş <inanc.gumus@grafana.com>
Co-authored-by: Mihail Stoykov <M.Stoikov@gmail.com>
Co-authored-by: Heitor Tashiro Sergent <heitortsergent@gmail.com>
Co-authored-by: Andrey Slotin <andrew.slotin@grafana.com>
Co-authored-by: Mihail Stoykov <312246+mstoykov@users.noreply.github.com>
Co-authored-by: Joan López de la Franca Beltran <5459617+joanlopez@users.noreply.github.com>